SCYM Study Guide 2026
Everything you need to pass the SCYM exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 SCYM Exam Format at a Glance
📚 SCYM Topics to Study (71)
✍️ Sample SCYM Questions & Answers
1. What is the ideal cell concentration for flow analysis?
While typical working concentrations for flow cytometry are often 1-10 million cells/mL, a concentration of 50 million cells/mL might be prepared as a concentrated stock solution. This ensures a sufficient number of cells are available for multiple analyses or for dilution to the optimal running concentration. Although running samples directly at such high concentrations can increase the risk of clogging and coincidence events, having a concentrated stock provides flexibility for experimental design.
2. In a spectral flow cytometer, unmixing algorithms require which reference material?
Spectral unmixing requires single-color reference spectra for each fluorochrome to mathematically separate overlapping emission signals across detectors.
3. What is the value of continuing education in immunophenotyping for SCYM professionals?
Continuing education ensures professionals stay current with the latest developments, standards, and best practices in their field.
4. Which gating strategy step should immediately follow excluding debris with an FSC/SSC gate in a standard immunophenotyping panel?
After the initial scatter gate removes debris, doublet exclusion ensures only single cells proceed to fluorescence analysis.
5. Which immunophenotypic feature is most helpful in distinguishing diffuse large B-cell lymphoma (DLBCL) of germinal center (GCB) versus activated B-cell (ABC) subtype by flow cytometry?
CD10 expression correlates with germinal center B-cell origin and is used as a surrogate flow cytometric marker to approximate the GCB subtype of DLBCL.
6. Which cytometric approach is used to identify circulating endothelial cells (CECs) as a biomarker of vascular damage?
CECs are identified as CD146+, CD105+, CD31+ cells that are CD45-negative to distinguish them from hematopoietic cells.